Houdini Ring

The magician displays a shoelace and a solid steel ring. The ring is threaded onto the shoelace where it visibly melts off. Once again the ring is fairly threaded onto the shoelace. It is clearly displayed hanging on the center. In the blink of an eye, it penetrates a second time. Now, as quick as it is removed, it is once again linked back on. The ring is then knotted on the shoelace and makes one final impossible escape!